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US Plant Patent PP17911

White Rock

Peach tree—named ‘White Rock’ cultivar

PUBLIC DOMAIN

Patent expired July 7, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on May 25, 2025. This patent earned 43 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP17911, the photograph of White Rock printed in the patent.
Figure 1 from US Plant Patent PP17911, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP17911
Filed
May 25, 2005
Granted
August 7, 2007
Expires
July 7, 2025
Assignee
UNIV ARKANSAS DIVISION OF AGRI
Inventor
CLARK JOHN REUBEN; MOORE JAMES NORMAN

Abstract

Description and specifications of a new and distinct peach variety which originated from seed produced by a hand pollinated cross of Ark. 371 (non-patented) and Ark. 367 (non-patented) is provided. This new peach variety can be distinguished by its features of early mid-season ripening, high yields of high-quality, attractive, clingstone, very firm white-flesh fruits, and good plant vigor along with good resistance to bacterial spot disease.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new and distinct variety of peach tree ( Prunus persica cultivar ‘White Rock’) as herein described and illustrated, characterized by its early mid-season ripening, high yields of high-quality, attractive, clingstone, very firm white-flesh fruits, and good plant vigor along with good resistance to bacterial spot disease.

Read the full patent: US Plant Patent PP17911 in full — the complete specification, every figure, and the file history.